Eruptions of the Yellowstone volcanic system have included the two largest volcanic eruptions in North America in the past few million years; the third largest was at Long Valley in California and produced the Bishop ash bed.
On the diesel Passat, the TDI badge stands for Turbocharged Direct Injection, which isn't really all that helpful as the gasoline-powered Passat is also turbocharged and also uses direct injection. Volkswagen attempts to clear this up by calling this Passat the Passat TDI Clean Diesel.
A CDI, or Capacitor Discharged Ignition is a system that is linked to the ignition of some petrol engine driven vehicles. Its purpose is to store an electrical charge that is â¦ discharged through the ignition coil and thus increases the power to the spark plug/s for a very powerful, high-energy spark.DI stands for Capacitor Discharge Ignition system it is an ignition system and also filters the fuel before it enters the engine which is affective First of all, the CDI d â¦ oes NOT filter the fuel-that's what the fuel filter is for!